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← Joliet, IL

Tap water quality report

ZIP 60431 — Joliet, IL

EPA monitoring across the 2 water suppliers serving ZIP 60431 in Joliet, IL detected 23 contaminants. A detection doesn't automatically mean the water is unsafe — see the highest level found below, with the EPA limit for each.

2
water suppliers
161,435
people served
23
contaminants found

What was found in ZIP 60431

The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
2290 µg/L 57%
of the EPA limit 4000 µg/L
 2/2 SYR4
Nitrate
1590 µg/L 16%
of the EPA limit 10000 µg/L
 2/2 SYR4
Nitrate-Nitrite
1590 µg/L 16%
of the EPA limit 10000 µg/L
 2/2 SYR4
Copper
1072 µg/L 82%
of the EPA limit 1300 µg/L
 2/2 SYR4
Barium
123 µg/L 6.2%
of the EPA limit 2000 µg/L
 2/2 SYR4
Lithium
54.7 µg/L
No EPA limit set
 2/2 UCMR-5
Lead
29.3 µg/L 195%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Gross Alpha, Excl. Radon And U
21.29 pCi/L 142%
of the EPA limit, in the worst sample — 15 pCi/L
 1/2 SYR4
Combined Radium (-226 And -228)
6.9 pCi/L 138%
of the EPA limit, in the worst sample — 5 pCi/L
 2/2 SYR4
Dichloromethane
3.67 µg/L 73%
of the EPA limit 5 µg/L
 1/2 SYR4
Selenium
2.52 µg/L 5%
of the EPA limit 50 µg/L
 1/2 SYR4
TTHM
2.294 µg/L 2.9%
of the EPA limit 80 µg/L
 2/2 SYR4
Arsenic
2.2 µg/L 22%
of the EPA limit 10 µg/L
 2/2 SYR4
Xylenes, Total
1.81 µg/L 0%
of the EPA limit 10000 µg/L
 1/2 SYR4
Dibromoacetic Acid
1.5 µg/L
No EPA limit set
 2/2 SYR4
Total Haloacetic Acids (HAA5)
1.5 µg/L 2.5%
of the EPA limit 60 µg/L
 2/2 SYR4
Chloroform
1.06 µg/L
No EPA limit set
 1/2 SYR4
Bromoform
1 µg/L
No EPA limit set
 1/2 SYR4
Bromodichloromethane
0.8950 µg/L
No EPA limit set
 1/2 SYR4
Dibromochloromethane
0.6340 µg/L
No EPA limit set
 1/2 SYR4
Combined Uranium
0.5215 µg/L 1.7%
of the EPA limit 30 µg/L
 1/2 SYR4
Lead
0.0065 mg/L 43%
of the EPA limit 0.0150 mg/L
 2/2 LCR
Pfpea
0.0032 µg/L
No EPA limit set
 1/2 UCMR-5
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Water suppliers serving ZIP 60431

SupplierStatePopulation served
JOLIET 160,000
CRYSTAL LAWNS ADDITION IMPROVEMENT ASSOC IL 1,435

Frequently asked questions about ZIP 60431 tap water

Is the tap water in ZIP 60431 safe to drink?

EPA testing detected 23 contaminants across the water suppliers serving ZIP 60431. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 60431?

2 public water suppliers report EPA drinking-water monitoring for ZIP 60431. Each is listed above with its population served.

What contaminants are in ZIP 60431's water?

EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.